JPH0588473U - Nozzle for carpet washer - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] When the suction of foam or sewage by the nozzle of the carpet washing machine is stopped, the foam or sewage sucked from the suction port of the nozzle is prevented from flowing out. [Structure] Edge parts 25Ta and 25Sa that are inclined upward toward the direction in which bubbles or dirty water are sucked are provided on the inner surface of a nozzle 25 that is assembled by joining two half-shells 25T and 25S. To do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a technical field of a carpet washer designed so that foam of detergent liquid is supplied to the carpet surface while being brushed with a cleaning brush, and the dirty water (foam) after cleaning is sucked by a nozzle and collected in a dirty water tank. Specifically, the present invention relates to a structure of a dirty water suction nozzle suitable for use in this carpet cleaning machine.

[0002]

[Prior Art]

 Conventionally, a dry foam type carpet cleaning machine in which foam is created and brushed with a cleaning brush to remove dirt on the surface of the carpet while dropping the foam on the surface of the carpet has been conventionally disclosed in JP-A-57-142228. There are various structures as seen in JP-A-58-44025, JP-A-58-83929, JP-A-58-34426, etc., but all of these carpet cleaning machines use brushes while dropping bubbles. There is a problem that the cleaning process is troublesome and the drying time is long because dirty bubbles (dirty water) remain on the carpet surface after cleaning only by cleaning.

On the other hand, the carpet washer described in Japanese Patent Laid-Open No. 58-61720 has a foam generating device for generating foam and a rotary brush for brushing, and sucks in foam after cleaning. Since the recovery port (nozzle) is provided, it has the advantage that the drying time after cleaning can be shortened by sucking the foam that has become dirty during cleaning into this recovery port.

[0004]

[Problems to be solved by the device]

 However, the nozzle of the carpet washing machine described in the above-mentioned Japanese Patent Laid-Open No. 58-61720 exerts suction force on the vertical collection ports which are horizontally wide and have a narrow interval, and thus dirty water (foam). The suctioned bubbles are not completely collected into the wastewater tank, and some of them adhere to and remain on the inner wall of the nozzle due to surface tension. When this happens, the attached foam or cleaning wastewater flows out toward the inlet of the nozzle, and there is a problem that it wets the lower carpet surface or floor surface.

Therefore, a technical problem of the present invention is to prevent bubbles or cleaning wastewater sucked by the nozzle from flowing out from the inlet of the blower when the suction of the blower is stopped.

[0006]

[Means for Solving the Problems]

 Means taken in the present invention to solve the above technical problems are as follows. A carpet washer configured so that foam of detergent liquid is supplied to the surface of the carpet by the pump pressure while it is running to brush it with a cleaning brush, and the dirty water after brushing is sucked into a dirty water tank through a nozzle. At

(1) An edge portion that is inclined upward in the direction in which dirty water is sucked is provided on the inner surface of the nozzle in a laterally long direction in the lateral width direction of the nozzle. (2) The above nozzle is constructed by joining two half-shells, which are formed in a generally inverted T shape, and the direction in which sewage is sucked into the inner surface of each half-shell. The edge part that slopes upward should be vertically displaced and horizontally provided.

[0008]

[Action]

 The above means operate as follows. According to the above-mentioned means (1), the foam or the cleaning wastewater sucked into the passage from the inlet of the nozzle hits the edge portion protruding on the inner surface and is pushed out toward the center of the suction passage, so The amount of adhesion to the inner side surface can be reduced by the tension, and by hitting this edge part, it becomes easy to get on the sewage tank side along with the suction airflow, so it can be efficiently sucked from the carpet surface and collected. In addition, even if bubbles or sewage adheres to the inner surface, the edge part receives these bubbles or sewage backflow, so that bubbles or sewage will not flow out from the nozzle inlet when suction is stopped. It can be prevented.

According to the above-mentioned means (2), since the nozzle has a two-part structure using two half-shells, it is easy to form the edge portion on the inner side surface, while bubbles or dirty water are formed. Since the edges that prevent the outflow are arranged vertically on both sides of the inner surface of the nozzle, it is possible to effectively prevent the generation of surface tension and the outflow of bubbles or sewage on the inner surfaces of both sides of the nozzle. Allows for a clean wash. As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

[0010]

【Example】

 Hereinafter, a preferred embodiment of the nozzle for a carpet cleaning machine according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a partial cross-sectional side view of a carpet washer implementing a nozzle according to the present invention, and FIG. 2 is a partial cross-sectional front view of the same. Airframes 2 and 3 are a tank for the detergent liquid S contained in the airframe 1 and a tank for the dirty water DW. 1a is a handle attached to the rear of the airframe 1 and 1b is a cover for covering the upper surfaces of both tanks 2 and 3. Body, 1T is a body frame provided on the bottom of the body 1, 4 is a drainage hose attached to the wastewater tank 3, 5 is a traveling wheel provided on the left and right of the body frame 1T, and 1R is a body 1 This is a display panel provided at the rear, where the display of the speed of the carpet cleaning machine is digitally displayed, for example, by a bar graph, the power ON / OFF display, the blower suction ON / OFF display, and the brush rotation display. ON / OFF display section is provided There.

Next, 5a is an axle having traveling wheels 5 and 5 attached to the left and right, 6 is a sensor wheel for detecting the traveling speed of the carpet washing machine, and 6S is a speed sensor. A bracket 1Ta that is vertically installed on the bottom surface of the body frame 1T so that it is located in the middle of the left and right traveling wheels 5 and 5, the upper end of the bracket 1Ta is vertically pivoted. It is attached to the lower end of the arm 7, and receives the pulling power of the spring 7S attached to the rotating arm 7 and constantly contacts the carpet surface with a constant pressure to measure the running speed of the carpet washing machine. It is configured so that it can be correctly transmitted to 6S for measurement.

Reference numeral 8 denotes a foot lever attached vertically to a bracket 1Tb vertically provided at a central portion of the machine body frame 1T by using a shaft 1Tc. When the foot plate 8a of the foot lever 8 is depressed downward, , The seat plate whose pressing shaft 8b attached to the tip is indicated by reference numeral 9 is guided by four guide poles 1Td in total (the other three are not shown in the drawing) and is raised, and is attached to this seat plate 9. It is designed to be able to lift the cleaning brush.

Numerals 10 and 11 are a pair of front and rear cleaning brushes attached to the lower side of the seat plate 9, and these cleaning brushes 10 and 11 are similarly attached to the seat plate 9 using a fixed ring 9a. The motor 12 is used as a drive source to relatively rotate to brush the carpet surface. That is, 10a and 11a are interlocking gears that mesh with the drive gear 12a of the motor 12 and rotate in a relatively interlocking manner. The rotating shafts 10d with the gears 10a and 11a attached, the pulley 10c attached to the tip of the rotating shaft 10d, The belts 10V and 11V are hung between 11c and the pulleys 10b and 11b attached to the rotating shafts of the cleaning brushes 10 and 11, so that the cleaning brushes 10 and 11 relatively rotate to brush the carpet surface. It is designed to do.

Reference numeral 13 is a pump also attached to the seat plate 9, and the suction pipe 13 a of the pump 13 is inserted into the above-mentioned detergent liquid tank 2 and configured to suck the detergent liquid S through the strainer 14. The delivery pipe 13b is also connected to the foam generator 15 also attached to the seat plate 9, and the detergent liquid S sucked from the detergent liquid tank 2 through the suction pipe 13a is supplied to the foam generator 15 from the supply port 15a. Then, bubbles are generated, and the bubbles are discharged from the pipe 16 and can be dropped on the carpet surface through the holes 16a.

Next, 20 is a blower mounted inside the machine body frame 1T, and a suction pipe 22 of this blower 20 is arranged so that an inlet 22a having a float valve 22b is projected above the inside of the waste water tank 3. Is installed upright in the sewage tank 3 to exert a suction action, and the suction action is performed by the nozzle 25 attached to the front face of the machine body 1 through the suction hose 24 having the tip port 24a opened in the sewage tank 3. On the other hand, the exhaust duct 21 connected to the exhaust port (discharge port) of the blower 20 is bifurcated midway, and one port is connected to the bubble generator 15 via the hose 21a, The other port provided with a butterfly valve 23 for adjusting the flow rate is connected to the blow-out port 21c provided between the nozzle 25 and the cleaning brush 10 via a hose 21b, and the blower 20 discharges the same. The generated exhaust gas is sent to the bubble generator 15 and the blowout port 21c to generate bubbles and dry the carpet surface.

As shown in FIG. 1, the nozzle 25 of the present invention implemented in the carpet washer constructed as described above has a blowout port 25a opened at the lower end and the suction port of the suction hose 24 connected at the upper end. Is provided with a connection port 25b, and a support plate 25F protruding from the inner surface of the lower part is pivotally attached to the front surface of the machine body 1 and the upper part is attached to the bracket 26 protruding to the front surface of the machine body 1. By being held between the attached adjusting bolt 26a and the compression spring 26b, it is swingably attached to the machine body 1.

In FIGS. 3 and 4, reference numerals 25T and 25S denote half-shells constituting the nozzle 25 according to the present invention. These two half-shells 25T are formed in a substantially inverted T shape. As shown in FIG. 5, a connection port 25b constituted by the mouth portions 25Tb and 25Sb is provided, and a bottom face is constituted by the inlets 25Tc and 25Sc so as to be flat and horizontally long by joining the joints 25S and 25S. A nozzle 25 having a suction port 25a and a suction passage 25c formed by grooves 25T1 and 25S1 is provided inside.

Further, edge portions 25Ta and 25Sa, which project in a state of being tilted upward, are provided on the inner side surfaces of the half shells 25T and 25S, respectively, in a horizontally long and vertically offset position, Therefore, when these two half-shells 25T and 25S are joined, as shown in FIG. 5, the edge portions 25Ta and 25Sa are projected toward the suction passage 25c by shifting the positions vertically from the left and right sides to cause bubbles or bubbles. It is devised so that dirty water does not adhere to both inner surfaces of the nozzle 25 due to surface tension, and that the adhered bubbles or dirty water does not flow out from the suction port 25a when suction is stopped.

Since the carpet cleaning machine nozzle according to the present invention has the above-described structure, after turning on the start switch for operation, the handle 1a is pulled by hand to rotate the wheels 5 and the cleaning brushes 10 and 11. When the vehicle travels to the right in FIG. 1, the detergent solution S is sent into the foam generator 15 by the pump 13, and the exhaust air of the blower 20 is supplied to the foam generator 15 to apply pressure. From this, the detergent liquid S is compressed and foamed in the foam generator 15, and is rectified into fine foam and discharged into the carpet surface from the discharge holes 16a of the discharge pipe 16 sequentially. This can be cleaned by brushing with the cleaning brushes 10 and 11.

Further, since the exhaust air of the blower 20 is blown to the carpet surface after being brushed from the air outlet 21c, it is possible to accelerate the drying time of the carpet surface wet with bubbles, and further, the suction force of the blower 20 is the pipe. Since it reaches the nozzle 25 through 22 and the hose 24, the dirty water (dirty foam) after cleaning can be sucked from the carpet surface and collected in the dirty water tank 3.

Further, when the foam or dirty water is sucked by the nozzle 25, the foam or dirty water sucked from the suction port 25a hits the edge portions 25Ta and 25Sa which project obliquely upward to the left and right of the suction passage 25c. Since the flow is guided toward the center of 25c, the amount of bubbles or sewage adhering to the inner surface of the suction passage 25c due to surface tension can be reduced, and the suction airflow of the blower 20 can be used to collect the sewage tank. Since it is easy to be sucked to the 3 side, it exerts an excellent suction force, and the amount of bubbles or dirty water flowing down along the inner surface when suction is stopped can be reduced as much as possible. Even if the dirty water adheres and flows down toward the suction port 25a when suction is stopped, the left and right edge portions 25Ta and 25Sa which are vertically displaced and protruded receive it. Therefore, the problem of bubbles or dirty water flowing out from the suction port 25a of the nozzle 25 when the suction is stopped can be solved.

[0022]

[Effect of the device]

 As described above, according to the nozzle for the carpet cleaning machine of the present invention, the foam of the detergent liquid is brushed while being supplied to the carpet surface, and further, the exhaust of the blower is applied to the brushed carpet surface for drying. While dirty foam can be collected in the wastewater tank through the nozzle, this invention can prevent foam or wastewater from flowing out of the nozzle when suction is stopped. It is possible to eliminate the risk of soiling the lower carpet surface or floor surface, and its practical value is extremely high when it is used for the nozzle of a carpet washing machine.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view showing the structure of a carpet washer equipped with a nozzle according to the present invention.

FIG. 2 is a partial cross-sectional front view of a carpet washer having a nozzle according to the present invention.

FIG. 3 is a front view of one half-shell constituting the nozzle.

FIG. 4 is a front view of the other half shell constituting the nozzle.

FIG. 5 is a side view showing an enlarged nozzle.

[Explanation of symbols]

 1 Airframe 2 Detergent liquid tank 3 Soil water tank 5 Running wheel 10, 11 Cleaning brush 13 Pump 15 Foam generator 20 Blower 21c Air outlet 25 Nozzle 25a Suction port 25T One half shell 25S The other half shell 25Ta Edge part 25Sa Edge Part 25c Suction passage

Claims (2)

[Scope of utility model registration request] 1. A structure in which foam of a detergent liquid is supplied to the surface of a carpet by a pump pressure while running and brushed with a cleaning brush, and the dirty water after brushing is sucked into a dirty water tank through a nozzle. In the carpet washing machine, an edge portion inclined upward in a direction in which dirty water is sucked is provided on the inner side surface of the nozzle in a laterally long direction in the width direction of the nozzle. 2. The nozzle is constructed by joining two half shells which are generally formed in a substantially inverted T shape, and sewage is sucked into the inner surface of each of these half shells. The carpet washing machine nozzle according to claim 1, wherein the edge portion inclined upward in the direction is provided in a horizontally long position by shifting the position vertically.